Most effective: Large, flat areas for example, the arms and legs.
Least effective: Curved areas the same as the underarms, and may even cause significant trauma to your face and also other thin skinned areas.
If you cut mens' hair youll need hair clippers also. http://www.cruzenews.com/wp-content/plugins/zingiri-forum/mybb/member.php?action=profile&uid=1993347